That sounds about right,
My last 4Runner only had one key, so I bought a key off E-Bay and it came with printed programming instructions.
I followed those and the alarm system indications were different before compared to after the programming, so I figured it was safe to have the key cut then...
Keyless codes for LOTS of stuff
Free Keyless Remote Fob Entry programming instructions, procedures for all automotive vehicles
I did not compare the various instructions, but found this site as I was looking at some other stuff.